TM10-3930-660-34 16-4.  MAIN CONTROL VALVE ASSEMBLY - REPAIR (Cont’d) 1. ASSEMBLE VALVE (39-68). a.   Install two spools (67 and 68). b. Install new O-rings (65 and 66) on two retainers (64). c. Install   two   retainers   (64),   flatwashers   (63),   spacers (62),  springs  (61),  flatwashers  (60)  and  socket  head shoulder screws (59). d. Install two spool caps (58) and cap screws (57). e. If   removal   of   plug   assembly   (56)   was   necessary, install it in housing section (43). f. Install two new O-rings (55) on spool caps (54). g. Install two spool caps (54) and cap screws (53). h. If removal of plug (52) was necessary, install it in inlet housing (51). i. Install three new O-rings (46) in housing sections (42, 43 and 51). j. Install two poppets (45) and springs (44). k. Use match lines on housing sections (41, 42, 43 and 51)  and  install  them  in  proper  order  on  tie  rods  (49 and 50). l. Install two nuts (47), one nut (48), two nuts (39) and one nut (40) on tie rods (49 and 50). m.    Torque nuts (40 and 48) to 74 ft. lbs. Torque nuts (39 and 47) to 48 ft. lbs. 16-22